Citations:
http://d28hgpri8am2if.cloudfront.net/book_images/cvr9780743482820_9780743482820_hr.jpg
http://riffle-bookcovers.s3-website-us-east-1.amazonaws.com/161382131X-original.jpg
http://d28hgpri8am2if.cloudfront.net/book_images/cvr9780743482820_9780743482820_hr.jpg
http://riffle-bookcovers.s3-website-us-east-1.amazonaws.com/161382131X-original.jpg